Which of your knows what share the Messenger of Allah ﷺ had given to the grandfather from the estate? Ma'qil ibn Yasar said: The Messenger of Allah ﷺ gave him a sixth. He asked: Along with whom? He replied: I do not know. He said: You do not know; what is the use then? (Using translation from Abū Dāʾūd 2897)
عَنْ فَرِيضَةِ رَسُولِ اللهِ ﷺ فِي الْجَدِّ فَقَامَ مَعْقِلُ بْنُ يَسَارٍ الْمُزَنِيُّ فَقَالَ قَضَى فِيهَا رَسُولُ اللهِ ﷺ قَالَ مَاذَا؟ قَالَ السُّدُسَ قَالَ مَعَ مَنْ؟ قَالَ لَا أَدْرِي قَالَ لَا دَرَيْتَ فَمَا تُغْنِي إِذًا؟